cient rigs (both vertical rigs and rigs in marginal plays) is happening faster than for the core three plays, where rigs are most efficient. Figure S. LIS Drilling Rig Score Card Since November OPEC Meeting local Rios Minn. All BittP11% !Junctional lionzontnl VIA-veal r.na: Rigs working as el OPEC Mating 194 1,871 962